What is HDD ??
- The full name of HDD is Hard Disk Drive. Hard disks are made up of one or more hardened metal plates. These plates are coated with a layer of metal oxide, which allows them to store data magnetically on the surface of the plates. Data and instructions are stored by magnetizing the fixed particles on the oxide elliptical surface of the plates. The magnetic particle retains its magnetism as long as it does not change its position. Hard disk plates rotate quickly. This speed is usually 5400 to 7200 rotations per minute (Rotation Per Minute-RPM). Hard disk appendices have several read-write heads, which allow the process of writing and reading data on disk plates.
- The hard disk capacity of a personal computer is usually more than 500GB. The disk is housed inside the computer's CPU. A Hard disk is also called hard drive. There are also external hard disks of different sizes and capacities kept outside the computer, with a capacity of more than 500GB, 1TB.
Advantages of HDD:
- The biggest advantage of HDD is that it is very low cost so that even a person can buy this type of hard disk in addition to the general economic situation.
- The capacity of a hard disk is very large so that Vadhu storage can be obtained through it at a low cost.
- This hard disk is very easy to get as it is cheaper. It is available in most of the shops selling electronic devices.
- One more good thing about this hard disk. Kate lasts longer. Once purchased it lasts for 5-6 years.

HDD Drawbacks:
- Due to the high RPM (Rotation Per Minute) in the hard disk, its speed is very low. It takes more time for data to be transferred.
- The higher the RPM in a hard disk, the more energy it consumes, so that the battery discharges faster. J affects the capacity of the battery.


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